import sys

#####
# 功能: 检查prbndry size 是否 是0.12的整数倍
#####

number1 = float(sys.argv[1])
def check_prbndry(mynum):
	a = round(mynum/0.12, 3)
	print(a)
	b = int(a)
	print("b: {}".format(round(b*0.12, 3)))
	print("b+1: {}".format(round((b+1)*0.12, 3)))
	print("b-1: {}".format(round((b-1)*0.12,3 )))

check_prbndry(number1)